The Onkyo Diamond Headphones are pair of headphones meant for the truly elite that the audio company unveiled at CES 2017. And as might be apparent from the fact that they are made out of diamonds, the driving design philosophy here is one of “making a statement.” Specifically, a statement about the fact that you can afford a truly spectacular pair of $100,000 diamond covered headphones. To get it out of the way, yes, those are real diamonds, not Swarovski crystal or glass. …